an idea for our cabbies

In the 3+ years I've lived in this city and taken a cab just so I could avoid losing a precious parking spot on the street, I've heard cab drivers increase the fare by a dollar twice. When confronted by my accusation they're trying to rip me off again, they usually cite high gas prices. Recently D.C. cabbies were considering strikes to protest the decision to go to a fare system. Maybe, if gas prices are such an issue, they should replace their old Marquis and Buicks with a car that guzzles less gas. Like they are doing in N.Y.